AU639076B2 - Security enhancement in a data processor through use of dynamic parameter authentication - Google Patents
Security enhancement in a data processor through use of dynamic parameter authenticationInfo
- Publication number
- AU639076B2 AU639076B2 AU72790/91A AU7279091A AU639076B2 AU 639076 B2 AU639076 B2 AU 639076B2 AU 72790/91 A AU72790/91 A AU 72790/91A AU 7279091 A AU7279091 A AU 7279091A AU 639076 B2 AU639076 B2 AU 639076B2
- Authority
- AU
- Australia
- Prior art keywords
- decryption key
- processing
- data
- predetermined decryption
- routine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
Abstract
A descrambler for descrambling scrambled information signals (10) through use of a predetermined decryption key (12) includes processing means (13) and a memory (14) for storing data (19, 27) for use in said data processing routines. The processing means are adapted for processing data in accordance with a number of different data processing routines to descramble said scrambled information signals, including a routine (16) for descrambling said scrambled information signals that utilizes said predetermined decryption key (12), and a routine (18) for generating said predetermined decryption key. The processing means includes means for responding to an instruction (20) for generating said predetermined decryption key by processing a first signal (22) provided by the processing means with a second signal (24) to generate said predetermined decryption key; and means for providing at least a portion of said second signal for processing with said first signal by retrieving a portion (25) of said stored data (27) from a portion of said memory identified by a dynamic pointer (26) contained in said instruction for generating said decryption key, with said retrieved data being data that is also used in a said data processing routine other than said routine for generating said predetermined decryption key. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US493006 | 1990-03-13 | ||
US07/493,006 US5151938A (en) | 1990-03-13 | 1990-03-13 | Security enhancement in a data processor through use of dynamic parameter authentication |
Publications (2)
Publication Number | Publication Date |
---|---|
AU7279091A AU7279091A (en) | 1991-09-19 |
AU639076B2 true AU639076B2 (en) | 1993-07-15 |
Family
ID=23958505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU72790/91A Ceased AU639076B2 (en) | 1990-03-13 | 1991-03-11 | Security enhancement in a data processor through use of dynamic parameter authentication |
Country Status (11)
Country | Link |
---|---|
US (1) | US5151938A (en) |
EP (1) | EP0447063B1 (en) |
JP (1) | JP3245187B2 (en) |
KR (1) | KR100195816B1 (en) |
AT (1) | ATE172830T1 (en) |
AU (1) | AU639076B2 (en) |
CA (1) | CA2037778C (en) |
DE (1) | DE69130401T2 (en) |
DK (1) | DK0447063T3 (en) |
ES (1) | ES2122966T3 (en) |
IE (1) | IE76286B1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365587A (en) * | 1993-03-11 | 1994-11-15 | International Business Machines Corporation | Self modifying access code for altering capabilities |
JP3647907B2 (en) * | 1994-09-09 | 2005-05-18 | 富士通株式会社 | Encryption software decompression system |
JP3294739B2 (en) * | 1995-03-30 | 2002-06-24 | 三洋電機株式会社 | Method for scrambling or descrambling FM multiplex broadcasting |
US5960086A (en) * | 1995-11-02 | 1999-09-28 | Tri-Strata Security, Inc. | Unified end-to-end security methods and systems for operating on insecure networks |
US5953419A (en) * | 1996-05-06 | 1999-09-14 | Symantec Corporation | Cryptographic file labeling system for supporting secured access by multiple users |
US6088449A (en) * | 1996-11-05 | 2000-07-11 | Tri-Strata Security, Inc. | Tri-signature security architecture systems and methods |
JP4268690B2 (en) | 1997-03-26 | 2009-05-27 | ソニー株式会社 | Authentication system and method, and authentication method |
US5991402A (en) * | 1997-09-23 | 1999-11-23 | Aegisoft Corporation | Method and system of dynamic transformation of encrypted material |
US20010044901A1 (en) * | 1998-03-24 | 2001-11-22 | Symantec Corporation | Bubble-protected system for automatic decryption of file data on a per-use basis and automatic re-encryption |
US6912655B1 (en) | 1999-08-09 | 2005-06-28 | Tristrata Security Inc. | Network security architecture system utilizing seals |
US7000119B1 (en) | 2000-04-20 | 2006-02-14 | Realnetworks, Inc. | Instruction/data protection employing derived obscuring instruction/data |
JP4912797B2 (en) * | 2006-08-30 | 2012-04-11 | 三菱電機株式会社 | ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, DECRYPTION METHOD, AND PROGRAM |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455602A (en) * | 1981-05-22 | 1984-06-19 | Data General Corporation | Digital data processing system having an I/O means using unique address providing and access priority control techniques |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132860B (en) * | 1982-12-21 | 1987-03-18 | British Broadcasting Corp | Conditional -access broadcast transmission |
US4613901A (en) * | 1983-05-27 | 1986-09-23 | M/A-Com Linkabit, Inc. | Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals |
US4712238A (en) * | 1984-06-08 | 1987-12-08 | M/A-Com Government Systems, Inc. | Selective-subscription descrambling |
JPS6120442A (en) * | 1984-07-09 | 1986-01-29 | Toshiba Corp | Chargeable broadcasting system |
US4864615A (en) * | 1988-05-27 | 1989-09-05 | General Instrument Corporation | Reproduction of secure keys by using distributed key generation data |
-
1990
- 1990-03-13 US US07/493,006 patent/US5151938A/en not_active Expired - Lifetime
-
1991
- 1991-02-27 ES ES91301583T patent/ES2122966T3/en not_active Expired - Lifetime
- 1991-02-27 AT AT91301583T patent/ATE172830T1/en not_active IP Right Cessation
- 1991-02-27 DE DE69130401T patent/DE69130401T2/en not_active Expired - Fee Related
- 1991-02-27 EP EP91301583A patent/EP0447063B1/en not_active Expired - Lifetime
- 1991-02-27 DK DK91301583T patent/DK0447063T3/en active
- 1991-03-07 CA CA002037778A patent/CA2037778C/en not_active Expired - Fee Related
- 1991-03-11 IE IE79291A patent/IE76286B1/en not_active IP Right Cessation
- 1991-03-11 AU AU72790/91A patent/AU639076B2/en not_active Ceased
- 1991-03-11 KR KR1019910003824A patent/KR100195816B1/en not_active IP Right Cessation
- 1991-03-12 JP JP07239291A patent/JP3245187B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455602A (en) * | 1981-05-22 | 1984-06-19 | Data General Corporation | Digital data processing system having an I/O means using unique address providing and access priority control techniques |
Also Published As
Publication number | Publication date |
---|---|
AU7279091A (en) | 1991-09-19 |
KR100195816B1 (en) | 1999-06-15 |
DK0447063T3 (en) | 1999-07-05 |
US5151938A (en) | 1992-09-29 |
IE910792A1 (en) | 1991-09-25 |
CA2037778C (en) | 2001-06-05 |
ATE172830T1 (en) | 1998-11-15 |
EP0447063B1 (en) | 1998-10-28 |
ES2122966T3 (en) | 1999-01-01 |
DE69130401D1 (en) | 1998-12-03 |
KR910017797A (en) | 1991-11-05 |
JP3245187B2 (en) | 2002-01-07 |
DE69130401T2 (en) | 1999-04-15 |
IE76286B1 (en) | 1997-10-08 |
EP0447063A2 (en) | 1991-09-18 |
CA2037778A1 (en) | 1991-09-14 |
EP0447063A3 (en) | 1992-11-25 |
JPH04220743A (en) | 1992-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Assignment registered |
Owner name: GENERAL INSTRUMENT CORPORATION Free format text: FORMER OWNER WAS: GENERAL INSTRUMENT CORPORATION |